Remove AppListMixer field trial.

ui/app_list/app_list_switches.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/app_list/app_list_switches.h"
 
 #include "base/command_line.h"
 #include "build/build_config.h"
 
 namespace app_list {
@@ skipping 22 matching lines @@
 // Enable/disable syncing of the app list independent of extensions.
 const char kEnableSyncAppList[] = "enable-sync-app-list";
 const char kDisableSyncAppList[] = "disable-sync-app-list";
 
 // Enable/disable drive search in chrome launcher.
 const char kEnableDriveSearchInChromeLauncher[] =
     "enable-drive-search-in-app-launcher";
 const char kDisableDriveSearchInChromeLauncher[] =
     "disable-drive-search-in-app-launcher";
 
-// Enable/disable the new "blended" algorithm in app_list::Mixer. This is just
-// forcing the AppListMixer/Blended field trial.
-const char kEnableNewAppListMixer[] = "enable-new-app-list-mixer";
-const char kDisableNewAppListMixer[] = "disable-new-app-list-mixer";
-
 // If set, the app list will forget it has been installed on startup. Note this
 // doesn't prevent the app list from running, it just makes Chrome think the app
 // list hasn't been enabled (as in kEnableAppList) yet.
 const char kResetAppListInstallState[] = "reset-app-list-install-state";
 
 bool IsAppListSyncEnabled() {
 #if defined(OS_MACOSX)
   return base::CommandLine::ForCurrentProcess()->HasSwitch(kEnableSyncAppList);
 #endif
   return !base::CommandLine::ForCurrentProcess()->HasSwitch(
@@ skipping 61 matching lines @@
     return false;
 
   return true;
 #else
   return false;
 #endif
 }
 
 }  // namespace switches
 }  // namespace app_list